/*
 * MIT License
 *
 * Copyright (C) 2023 Huawei Device Co., Ltd.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
import React, { useContext, useEffect, useState } from "react";
import { FlashList } from "@shopify/flash-list";

import { DebugContext } from "../Debug";

import Contact from "./models/Contact";
import contacts from "./data/contacts";
import ContactCell from "./ContactCell";
import ContactSectionHeader from "./ContactSectionHeader";
import ContactHeader from "./ContactHeader";
import ContactDivider from "./ContactDivider";

const Contacts = () => {
  const debugContext = useContext(DebugContext);
  const [data, setData] = useState<(Contact | string)[]>([]);
  useEffect(() => {
    const contactsWithTitles = Array.from(contacts.keys())
      .sort((aKey, bKey) => aKey.localeCompare(bKey))
      .flatMap((key) => {
        return [key, ...(contacts.get(key) ?? [])];
      });
    setData(contactsWithTitles);
  }, []);

  const stickyHeaderIndices = data
    .map((item, index) => {
      if (typeof item === "string") {
        return index;
      } else {
        return null;
      }
    })
    .filter((item) => item !== null) as number[];

  return (
    <FlashList
      testID="FlashList"
      estimatedItemSize={44}
      data={data}
      renderItem={({ item }) => {
        if (typeof item === "string") {
          return <ContactSectionHeader title={item} />;
        } else {
          return <ContactCell contact={item as Contact} />;
        }
      }}
      getItemType={(item) => {
        return typeof item === "string" ? "sectionHeader" : "row";
      }}
      ItemSeparatorComponent={ContactDivider}
      stickyHeaderIndices={stickyHeaderIndices}
      ListHeaderComponent={ContactHeader}
      initialScrollIndex={debugContext.initialScrollIndex}
    />
  );
};

export default Contacts;
